There's a revised rack and pinion for steering wheel nibble on certain trucks. Tightened up the clearance between the rack gear and pinion gear, isolating road imperfections a little better from the driver.

 

I had ANOTHER flat tire this morning (second in 1.5 months) (damn area is expanding on a momnumental scale and the construction is going to cost me a set of tires at this rate). Pulled a nail out of it this time (last time was a dry wall screw).

Anyway, while they were doing it I asked them to check the balance on the tires as they offered to do it for free. Sure enough, I had two (both on the pass side) that were pretty far out. That being known, I went ahead and had them rebalance all four to precision... my tiny nibble that I had at 72 on acceleration is totally gone now as well...